Car-truck



(N0 Model.)

J. KREHBIEL.

GAR TRUGK. No. 450,627.

Patented Apr. 21,1891.

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lJOHN KREPIBIEL, OF KALAMAZOO, MICHIGAN.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 450,627', dated April 21, 1891.

Application filed July 22,1890. Serial No. 359,548. (No model.)

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Beit known that I, JOHN KREHBIEL, a citizen ofthe United States, residing at Kalama Zoo, in the county of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in car-trucks; and the invention consists in the peculiar construction of the frame and its connection with the transom, whereby the car is supported on the truck free to play in a vertical lateral direction to promote the easy riding of the car, and with special regard to safety from accidents, all as more fully hereinafter described, and shown inthe drawings.

In the said drawings, Figure l is a plan of myimproved truck with the transom removed. Fig. 2 is vertical central cross-section through the transom and car-truck. Fig. 3 is a detached perspective view of the transom, and Fig. et is a vertical longitudinal section of the truck.

The material from which my truck-frame is constructed is steel casting in parts where it is advisable, and framing is resorted to where more convenient or desirable, and as this art of construction is well understood I will not specify the details of construction.

The truck comprises the usual number of wheels A fast upon the axles B, which are j ournaled in axle-boxes C, provided with the usual journal, and preferably cast integral with the sides of the frame. These sides are transversely connected between the two pairs of wheels by a metallic transom C', preferably cast integral with the said frames. This has framed in it a vertical well D, rectangular in shape, with parallel sides D', which depend some distance below the top of the transom. The movable transom D2 is supported thereon by side springs D3, and has a central casting Dl on its under sides, which is adapted to engage into the well and fit between the side walls; but it is made of smallerlength in the transverse direction to have a transverse play in the well between the side spring E E, interposed between the ends of the dependent casting and the sides of the frame, all so arranged that any lateral vibration of the movable transom is taken up by these springs. The end springs are supported upon shelves G, projecting from the side frame, and are preferably confined between the compressionbars Il, which are rounded on their upper and lower sides, respectively, and are connected by guide-bars I Lwhich hold the coiled springs in place and engage into the apertures J, formed in the side brackets. The upper ends of these guide-rods project above the top cornpression-plates and engage through apertures in the ends of the movable transom, all so arranged that the springs are adapted to resist vertical compression, but leave the transom free to play transversely.

Y The movable transom is provided with the usual devices for connecting it to the under side of the car. The side frames are bifurcated at their ends to provide space for the carwheels between such bifurcations, and the inner part of each bifurcation is provided with a passage through which the axle passes, and in which the axle is adapted to iind a temporary bearing in case-the journal end of the axle should break off, which in the usual way of constructing the truck would result in a breakdown, but which with this construction will be sufficient to safely carry the car to its destination, where the accident may be repaired. I preferably provide each wheel with a concentric flange K upon its inside, upon which the brake-shoes L are adapted to engage, and thereby form a more efficient brake system, as this flange is less liable to be defaced from wear and tear and the tread of the wheel. Said movable transom is readily detachable fromthe track, and is provided with any suitable side bearings for the car-body and central bearing for a pivotal connection with the car.

That I claim as my invention is l. In a car-truck, a metallic transom supported upon end springs on the car-frame and free to vibrate transversely, a dependent rectangular guide-bearing formed on the under side of said transom, and a corresponding rectangular wcll formed on the transverse support of the car-fran1e through which the dependent guide-bearing passes and is held free to vibrate laterally, substantially as described.

2. In a car-truck, a metallic transom supported upon end springs on the car-frame and free to vibrate transversely, a dependent rect.- angular guidebearingr formed on the under side of said frame, and a corresponding;I rectv angular well formed on the transverse support of the ear-frame into which the dependent guide-bearing engages, and horizontal springs secured in said well between the sides ofthe truck-frame and the ends of the de pending `guide-bearing from the transom, substantially as described.

3. In a ear-truck, the combination,with the truek-frame, of the shelves fortnedon the side of said frame, the metallic transom having` dependent guide-bearings suspended in acorrespondingly-shaped well in atransverse portion of the truck, said transverse portion havingguide-bearings dependent therefrom, the transom being,r free to move laterally in said well, and end springs for supporting the trang the ends ot the transom and the side frames and horizontal springs secured between the side frames and the ends of the dependent gnidebearings of the transom, substantially as described.

5. In a car-truck,the combination, with the truck-frame, the shelves formed on the sides of the frame, the transom provided with a dependent rectangular guide-bearing, the well in the transverse portion of the truckfrarne, in which said guide-bearing engages free to vibrate laterally, the horizontal springs secured between said guide-bearing,` and the sides of the frame, and the end supportingspring,1 secu red between roeker-platesand having the guide-rods engaging in the apertures of the transom and the supporting-shelves ot the side frames, substantall7 as described.

t5. A metallic car-truck having the ends of the side frames bifurcated and provided with bearings for the axles on opposite sides ot' the wheels, substantially as described.

In testimony whereof I at'tix my signature in presence of two witnesses.

JOHN KREHBIEL.

Witnesses:

M. B. ODoGi-IERTY, W. L. LINDoP. 

